Automobile turntable



R. .B. ISEMAN AUTOMOBILE TURNTABLE` Ap 2s, 192s..

' Original Filed Aug. 31

, 1925 3 Sheets- Sheet 1 INVENTOR ATTORNEY April 2s, 1.225.

. R. B. ISEMAN AUTOMOBILE TURNTABLE 'original Filed Aug. 31. 1925 5 Sheets-Sheet I5 uw w@ Mm nnrrsnsrarss lenteur orifice.

mennen n. rentrant, on crearon, rnnnsrevanra, sesiones, nv Mnsivn assrenfivinn'rs, ro' .sufro Tumi sortirent. or crearon Pennsylvania, .a oonroaarroiv OF IPIENNSYLVANIA.

To all' coll/0m t may con/cern.'

lle it known that l, RICHARD B. snMAN, a citizen ot the United States, residing at y Clarioinin the county ot Clarion and State et Pennsylvania, have invented certain new and useliul lmprovements in Automobile i rlurntables, ot which the following is a i specification. I

My invention relates to automobile turntables oit the traveling type,.and particularly to devices of this type which comprise a truck havingmobility wheels, and a turret mounted to revolve on the truck and provided with means for supporting an automobile.

@ne 'feature of my invention is the proyvision ot braking means` tor the turret controlled automatically by an automobile running onto or ott" from the turret.

my copending application tiled on the 31st day of August, 1923, Serial No. 660376, for improvements in automobile turntables. v l will describe one term ot `turntable embodying my invention, andwill then point out the novel leatures thereof in claims.

In the accompanying drawings, Fig.` l is a top plan view, partly sectioned, showing one 'l'orm ot turntable embodying my invention. Fig. 2 is a sectionall view on the line lly-l'l ot Fig. l. Fig.v 3 is in part a side elevation of the turntable shown inllig. l, and `in part a sectional view on the line lll-lll ot Fig l.. Fig. l is a plan'view showingthe turret brake mechanism E ot Fig. lon aV larger scale. Fig. 5 is a scctional view on the line if-V oit Fig, l. (i is a sectional view on the line Vif-Vl olf llig. 4. Fig. 7 is a side view ol' the clamping.: wing 2G and springv il() shown iu Figs. llv and 3. Fig. tl is z, side view showing a portion oit the mechanism shown in l and 3 tor controllingthe truck brake; Fig. fl is an enlarged plan view oit the devices on carrier 13 tor controlling the locking ot' the turret. llig. l0 is a frag mental top plan view ol: the turret B showingy an indicator 'for the turret brake.

lhe present application is a division. et'` Fig. 2.

ancrer/roeren restaurants.

Similar reference characters refer to similar parts in each ot the several views. Referring to the drawings, the turntable Divided and this application filed. July 26, cral No. 728,507. .Y

comprises a truck A provided with mobility wheels 6 adapted to run on a track C or on the Hoor of the garage according as desired., and a turret lg mounted to revolve on rollers 17 carried by the truck and provided with carriers 13 and 13a adapted to support the wheels ot an automobile.

The truck fr comprises a ring-like mem ber Q having a` plurality of radial spokes 58. The member 2 is provided with 'tour bosses Ll carrying roller bearings l0 in which are journalled two axles 5 to which the mobility wheels 6 are attached. rlhe ring-likeV member 2 also carries a plurality of studs 66 projecting radially therefrom, and each stud is provided with a ball bearing 68 which supports one of the rollers 1,7. lhese rollers are conical in shape, and they co-act with a conically formed track. 2d on the under surface of the turret B, as shown in The elements thus lar referred to are fully described and claimed in a co-pending application tor Letters Patent of the vUnited States, Serial No. 660375, filed on` the 81st day of August, 19:23, by Roy 0.

Ditl'endcrter and Carl T. Alline. lnasmuch as these elements i'orm no part et my pres ent invention, l will not describe them in detail herein v yl`he braking` orp the mobility wheels (3 is accomplished lby two braking devices l) and DL, one on each axle 5. Each oit those braking devices is olf the well known automobile type conuprising a. drum Q5 lined to the axle 5, a brake band 5S) surrounding the drinn, and a rod 22 lor tightening the band on the drinn. llhe rod is :ontrollcd by a cam 7 lined to theturret l and co-acting with a roller `Scarried by a. lever 9 which ,is pivotally mounted intermediate its ends in a bracket l2 attached to one ot the spokes 58 of the truck A. The other vend oiu the lever 9 is pivotally connected with one end ot a link 11, the other end ot which link y is pivotally connected with a crank 1S journalled in a bracket 1G .fixed to the truck A. The crank 1S is likewise pivotally connected to a vertically disposed link 19, which in turn is connected with a crank 2O mounted to swing in a bracket 21 attached to the underside ot' the truck A.. rlhe lower end ot the crank 2O is pivotally connected with the rod Q2.

A second crank Z()a is similarly mounted in a bracket 21 secured to the underside ot the truck ik, and the upper end ot this crank 20 is also pivotally connected with the vertical link 19. The lower end ot the crank 20 is connected with a rod 22 which con trois the b aking device l. 1. The device D is similar to the device l) described herein betere, but operates on the other axle 5 ot the truck A.

Both ot the braking' devices l) and D are biased to the released position by a spring 23, one ond ot which is attached to the crank 1S and the other end to the truck A as shown in Fig. 8.

The operation of the mobility wheel brakes is as follows:

Then the roller 8 is out ot engagement with the cam 7, the braking devices D and DfL are released, so that the truck is free to roll alongthe track C or the licor ot the garage. lllhen, however, the turret B is swung to such position that roller 8 is in eup'agenient with the cani T the link ll. is nilled outwardly It'roni the center ot the truck, the link lf) is raised vertically, the rods 22 and i2 are pulled radially toward the centerl ot' the truck, so that the brakes are applied and the turntable is locked in the iluisition which it then occupies.

Yin the arrangement shown in Figi'. t ot tl c accoinpairvingdrawings, the turret is provided with two canis T which are so located that the brakes arel applied when the turret is in such position that the arriers t3 are parallel with the track rails C. lt is understood, however, that any nuniber and any arrangement ot' cains may be provided on the turret B so that the turntable will be locked in any desired position or positions ot the turret with respect to the truck, and so with respect Vto the track rails (l.

rl`he braking ot the turret: B with .respect to the truck is accomplished by two braking devices E and E controlled respectively by t-wo treadles 31 and 3l" located at the diagonally opposite outer ends ot the two carriers 13 and 13, respectively, as shown in Fig. 1.

The treadle 31 is pivotally mounted on two pins 27 and 2T supported in lng' (il and bracket 62 on the carrier 13 and normally occupies the elevatedl position in which it is shown in Fig. 3. The treadle is restrained from further upward nioveinent troni this position by a heel 60 which engages the upper surtace oit the carrier 13. Pivotallj.' altached to the treadle 31 is a rod 32 which extends behind the carrier 13 to the braking;l device E where it is connected with an intermediate point in a lever 33 pivotally mounted at one end in a bracket 34; attached to a wall 14s of the turret l5. The tree end of lever 33 is connected with one end ot a link 35 the other end of which is bilurcatcd and carries a pin 53 on which a pavfl 4.8 is pivotally mounted. Also pivotally niounted on the pin are two links 63 which are our* nailed freely en a shaft 50, whereby the p t8 is constrained to swing around this shaiV as a center. As best shown in Fig. 5, the shat't 5() is journalled in the top plate (Slt ci the turret B and also in a bracket 38 which is att-ached to thel vertical side member 1-:loit this turret, so that the shatt :30 is vertically disposed and is tree to oscillate. the shat't 50 beneath the bracket 3S is an arm which is connected with one end ot a spring' 36; the other end ot this spring` is connected with a bracket attached to the vertical plate lllof the turret.

biases the pawl etti, the link 35, the lever and lthe rod to the positions in which these parts are shown in Fig. 4t.

Also iixed to the shatt 50 is a ratchet wheel -l-T which coacts with the pawl Llc, this pawl being' biased into position ifor engancinent with the ratchet wheel by a spring itl supported on one ot the links (S3.

.liso tilted to the sha'tt 5t) is a wheel having two cains 37 dianietrically disposed and arranged tor coaction with a lever 23S?. )is shown lin .liijcgs et and this lever is mounted to oscillate or a pin ."ii. which is supported in the top plate, titot the turret ll, and also in a bracket 56 iixed to a vertical web 5T ol this turret. The lever {Si} carries a pin which controlsI a brake shoe lo provided with a braking.;` sui-tace fl-O", which surit'ace is arranged to coact with the ozitcr periphery of the ring-shaped ineinber i? ot the truck A.. rl`he mechanism for controlling,` the brake shoe ht() by the pin :3ft will he explained hereinafter, it being;` suiiicient at this point to state that when the lever 8f) is not acted upon by either oi the cams Si the brake shoe is released 'troni the truck, but that when the lever is swans; in chicawise direction, as viewed in Figi. ft, by either ot' the cams 237, the brake shoe 4t) is 'Voi-cfr! into engagement with the truck fr. To insure the release. ot the brake shoe 50 when the lever 39 is released by the cani wheel 23T l provide the lever 39 with an arin 1li. which arm is biased in counter-clockwise direction. as viewed in Fig. 4, by a spring; the other end of which is anchored on the 'all of turret B.

In order to prevent backward rotation ot the ratchet wheel 4i?, l preferably provide an additional pawl 5l pivotally attached to Fixed to i" ri`he spring n let) lll) `wise direction by pawl 48, but to positively prevent rotationot this wheel in the other direction.

The operation 'ot the turret brake is as follows; i i i Normally the treadle 31 is held in the ele vated position by the action ot spring 36, so that/all parts of the brake 'are in the posi tions shown in the drawings. Then an automobile rolls onto the carriers 13 and 13,

`the iii-st `wheel depresses the treadle 31,

thereby pulling the rod `352 outwardly so that the pawl 48 causes a quarter turn ot' the ratchet wheel 47, the shaft 50, and the cam wheel 37. This quarter turn brings one oit 'he cams 37 into engagement with the leverl, so that the brake shoe is 'forced into engagement with the truck A, and so the turret is locked with respect to the truck. las soon as the :lirst wheel leaves the treadle 3l, the rod 82, lever 33, link 35 and pawl LS return to their normal positions, but the shaft 5() and cam wheel 37 remain stationary, so that the brakeis notreleased. il/Then the rear wheel ot the automobile depresses the treadle 31, the operation is repeated, that is, the cam wheel 37 vmakes another quarter turn so that it releases the lever 3S and the brake shoe is then released trom the truck A by the action of spring lllhon an automobile rolls ott 'from the turret, the operation is repeated, that is, the lirst wheel which engages the treadle ill causes a quarter turn of the `cam wheel 8l' and so causes the brake to be applied, where-- as the second wheel which engages the trcadle causes another quarter turn ot' the cam wheel 3 `and so `causes the rbrake to be released.

y The braking device treadle 31 in exactly thesame manner as device lil is controlled. by treadle 31. It will be seen, therefore, that when an automo bile rolls onto the turret trom either end, the turret will be locked with respect to the truck by the lirst right-hand wheel ot the automobile and will be released by the sec-A ond right-hand wheel.

lllach end of each carrier 13 and 13a is provided with a clamping wing `26 which is `pivotallymounted 4on the pins Q7 and QT and is biased to the position shown in Fig. 3 by a spring 8O anchored on the carrier 13. In this position the wingl is tree trom u1u l'loor. ylhe swinging movement o'l'the wing QG with respect to the carrierll is guided by a rod 28 fined to thecarrier 13 and'co-acting with a. slot 29 in the wing 26. Then an automobile rolls onto the carriers 13 and 13' each wheel depresses the corresponding wing 26 against the action of the spring 30, so that this wing` then rests on the floor and so serves to prevent the turret from lll is controlled byi revolving on the truck until the treadle is operated to apply the brake. Willen the automobile rides od from the carrier, this wing 26 likewise serves to lock the turret after treadle Ell has been released and until the automobile wheel is entirely clear ot' the carrier. y

i Referring now to Figs. l and` G, the mechanism for operating brake shoe 1li), is as tollows: i

This brake shoe is provided with two wings lO), as shown in Fig. (5, and is -turther provided with a stein Vl-. projecting` outwardly from the inner surface of the shoe. The pin 54 operates in slots se in the two uf'ings ot the brake shoe and the crank 39 is provided with a stem lo projecting in wardlytoward the stem 115. y interposed between `the crank 3S) and the shoe el-.O is a spring il which surrounds both oit'= the stems /l and 16, and so is guided by thes stems. VJhen the crank 39 is swung into brake-applying position, it exerts pressure on the spring lll, and the spring in turn exerts pressure on the shoe 10, tending to torce this shoe against the turret A. As long as the braking surface 40 is in good condition, the stems lo and todo not meet, but as the braking surface lll becomes worn, these stems come closer and closer together, until they iinally moet when the braking surface is practically worn oli". lt will thus be seen that the spring -l-l compensates for wear ot the braking surtare lo, that is, this spring provides almost constant pressure ol the brake shoe on the truck, regardless `ot the condition ot the braking surtace 40,

lt willbe apparent from the foregoing that it' either treadlell or 31 depressed accidentally, as, ior example, il" it is stepped upon, oneoit' the brakes lil or lil will be sot orreleased, according as the brak-e previously released or set, and such brake will then be out ot tune. That is to say, it the turntable is then unoccupied, one ot' the brakes will be set and an automobile rolling onto the turret Ytrom the corresponding end will release the brake, whereas such a-uto mobile should set the brake. It accordingly becomes desirable to indicate at all times the condition oitboth 01": the braking devices E and lila. rThis .may be accomplished by suitable means, such, tor exanujile, as the indicating device shown in Figs. 5 and 10. ',lhe device in this torni comprises a pointer 6G lined to the upper end ot' the sha/tt 50, so thatit swings onthe upper suritace ot' the turret B. This pointer co-operates with two markers G2 in such manner that when the brake is released, the pointer registers with one marker or the other, whereas when the y brake is set the pointer is midway between the two marks. It will be obvious that betore allowing an automobile to roll onto or olf from the turret B the attendant should malie sure that both pointers 6G register with one ot their associated markers 67. Any other suitable form of indicating` device may be substituted for the device shown in the accompanying' drawings.

Although I have herein shown and described only one 'form of automobile turntable embodying my invention, it is understood that various changes and modifications may be made therein within the scope or" the appended claims without departingl from the spirit and scope ot my invention.

Having thus 'described my invention what l claim is:

l. jan automobile turntable comprising a truck, a turret revolubly mounted on said truck, and means controlled by an antoniobile rolling onto and oil from said turret Y'or locking` the turret with respect to the truck.

Q. An automobile turntable comprising a truck, a turret revolubly mounted on said truck, a brake tor restraining movement ot said turret with respect to said truck, a device actuated by the wheels oi" an antoniobile rolling` onto and oli' ot said turret, and means responsive to successive actuations ol: said device for successively applyingl and releasing` said brake.

3. in automobile turntable comprising.; a truck, a turret revolubly mounted on said truck, a brake for restraining` movement et said turret with respect to said truck, a rotatable cam tor successively applying and releasing; said brake, a treadle actuated by the wheels oit an automobile rolling` onto or oit' from said turret, and means interposed between said cam and said treadle for successively moving;l the cam into brake-applying?y and brake-releasing positions in response to successive actuations ot' the treadle.

a. An automobile turntable comprising a truck, a turret revolubly mounted on said truck, a brake for restraining movement o1 said turret with respect to said truck, a rotatable cam for successively applying` and releasing said brake, a lever mounted to oscillate, a pawl and ratchet device between said lever and said cam whereby successive oscillations et the lever cause successive movements of the cam to brake-applying` and brake-releasing positions, and a treadle actuated by the wheels ot an automobile rolling` onto or oil' trom said turrent ttor causing oscillations of said lever.

5. An automobile turntable comprising), a truck, a turret revolubly mountedr on said truck, a treadle actuated by the wheels ot an automobile moving onto or ell trom said turret, and braking' means for said turret controlled by said treadle.

G. An automobile tru'ntable comprising' a truck, a turret revolubly mounted on said truck, a treadle actuated by t-he wheels ot an automobile moving onto or otli from said turret, and brakingr means Jfor said turret successively set and released by successive operations ot said treadle.

7. An automobile turntable comprisingl a truck, a turret revolubly mounted on said truck, a treadle actuated by the wheels of an automobile moving onto or off from said turret, brakingA means controlled by said treadle tor locking;` said turret with respect to said truck, and auxiliary braking means actuated by the wheels et au auton'uibile ifor holding said turret fixed with relation to the tloor beliore` the l'irst wheels have reached said treadle when the automobile is moving onto the turret and aiter the last wheels` have let'tthe treadle when an automobile is moving oil trom the turret.

An automobile turntable comprising a truck, a turret revolubly mounted on said truck, automobile carriers supported by said turret and located above the floor, and a wing` at each end oi each carrier pivotally attached to the carrier and biased to such position Yto normally clear the floor but movable into contact with the floor by the wheels of an automobile running onto or oliI from the carriers.

9. An automobile turntable comprising a truclr, a turret revolubly mounted on said truck, automobile carriers supported by said turret and located above the licor, a treadle on one carrier disposed in position to be actuated by the wheels ot au automobile running` onto or olf fromthe turret, and a wine' at the tree 'end et said one carrier biased to such position as to norn'ially clear the lioor but movable into contact with the Hoor by the wheels ol an automobile running' onto or olf from the carriers.

10. in automobile turntable comprisingl a truck, a turret revolubly mounted on said trucx, braking` means i'or said turret controlled by an automobile rolling' onto or oill from thel turret, and means for indicatingwhether said braking means .is set or released.

ll. fin automobile turntable comprising; a truck, a turret revolubly mounted on said truck, a treadle actuated by the wheels olf an automobile morini.;l onto or oli lrom said turret, braking` means for said turret controlled by said treadlc, and means tor indicatingwhether said braking moans is set or released.

ln testimony whereof l alii); my signature.

nonnen n. r'sniaan.

lll) 

